Question

Evaluate the expression when y = - 3.
- 7y2

Answer 1

y2 • (y - 7)

Step 1 (y3) - 7y2

step 2 3.1 Pull out like factors :

step 3 y3 - 7y2 = y2 • (y - 7)

final step is y2 • (y - 7

Answer 2

So what you do for this one if you plug it in.
-7y2. So you have -7(-3)^2 which is -7(9) which is -63. So your answer is -63. Hope this helps!!!